Corrugated plate condensing heat exchanger
A condensing heat exchanger and corrugated plate technology, applied in the field of heat transfer enhancement, can solve the problems of affecting the heat exchange efficiency of the heat exchanger, the temperature is much higher than the dew point, cannot be separated in time, and will quickly return to the mainstream, etc. , to improve the heat transfer effect, improve the separation of gas and water, and increase the heat transfer coefficient
Inactive Publication Date: 2017-04-05
CHANGZHOU UNIV +1
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Problems solved by technology
In order to improve the heat transfer coefficient on the gas side, finned tube heat exchangers are generally used. When the traditional finned tube heat exchanger is directly applied to the wet gas to recover its sensible heat and latent heat of condensation, when the wet gas and the wall surface below the dew point temperature During heat exchange, condensate will be produced on the heat exchange surface, but due to the lack of structure and direct air flow, the condensate cannot be separated in time, and will soon return to the main flow, and the temperature of the main flow may be much higher than that at this time. Dew point temperature, so that the condensate will evaporate into the mainstream again, causing the temperature of the mainstream to drop. As a result, the latent heat of condensation is not recovered, which directly affects the heat transfer efficiency of the overall heat exchanger. Therefore, only when the temperature of the mainstream drops below the dew point temperature After that, the latent heat of condensation can be truly recovered. Further, even if the mainstream temperature drops below the dew point temperature, the tiny particles of condensate condensed in the mainstream gas need a high-efficiency gas-liquid separation device to quickly remove the droplets in the wet gas
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[0024] The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.
[0025] Such as Figure 1-4 Shown is the best embodiment of the present invention, a corrugated plate condensing heat exchanger, including a box body 2, a plurality of corrugated plate heat exchange elements 4, an upper header 5, a lower header 6, a liquid accumulation hopper 7 and The drain pipe 8, one end of the box body 2 is provided with an air inlet 1, and the other end of the box body 2 is provided with an air outlet 3, the air inlet 1 and the air outlet 3 are connected, and a plurality of corrugated plate heat exchange elements 4 are parallel to each other Arranged in the box 2, the end of each corrugated plate heat exchange element 4 close to the air inlet 1 is ...
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The invention belongs to the technical field of strengthened heat transfer and relates to a corrugated plate condensation type heat exchanger having a gas-liquid separation effect. The corrugated plate condensation type heat exchanger comprises a box, an air inlet, an air outlet, an upper container, a lower container, a plurality of corrugated plate heat exchange elements, a liquid accumulation hopper and a drainage pipe. The multiple parallel corrugated plate heat exchange elements provided with internal flow guiding channels are vertically arranged in the box of the heat exchanger. Guiding-in pipes of all the corrugated plate heat exchange elements penetrate through the box to be communicated with the upper container. Guiding-out pipes of all the corrugated plate heat exchange elements penetrate through the box to be communicated with the lower container. The air inlet is communicated with one end of the box of the heat exchanger. The air outlet is communicated with the other end of the box. The liquid accumulation hopper is internally communicated with the bottom of the box. The drainage pipe is internally communicated with the bottom of the liquid accumulation hopper. The corrugated plate condensation type heat exchanger is suitable for the condensation heat exchange process of hot wet gas, and the corrugated plate heat exchange elements can have the effects of efficient heat exchange and gas-liquid separation; meanwhile, pollutant gas and microparticles in the hot wet gas can be dissolved by condensed fluid, and gas purification is achieved to a certain extent.
Description
Technical field [0001] The invention relates to the technical field of enhanced heat transfer, in particular to a corrugated plate condensation heat exchanger. Background technique [0002] As a high-quality, high-efficiency, and clean fuel, natural gas is widely used in industrial production, urban transportation and residents' lives, and has become the main fuel for industrial boilers and industrial furnaces. Since natural gas is mainly composed of methane gas, the flue gas after combustion contains a large amount of water vapor, and the volume ratio is as high as about 20%. Generally, the mixture of dry flue gas and a certain amount of water vapor can be called wet flue gas. According to combustion calculation, the amount of water vapor generated after the combustion of natural gas per cubic meter reaches 1.652kg / m3 and the latent heat of vaporization reaches 4130kJ / m3. However, due to structural limitations and other factors in the current domestic gas boilers and industrial...
Claims
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IPC IPC(8): F28B1/02
Inventor王政伟雷斌冯锦宇殷诗明
OwnerCHANGZHOU UNIV